Answer:
Step-by-step explanation:
50 can be also written as 
and the reciprocal means the inverse or to flip the fraction.
eu não sei, desculpe companheiro, não me denuncie
Answer:
the value of x is 12, the answer is C, x = 12
Answer:
d 2
Step-by-step explanation:
x/7 +13/14 = 17/14
double the first one so all the denominators are the same
2x/14+13/14=17/14
then subtract the second fraction from the thrid
2x/14=4/14
then we can divide by two so we are back to 7 as the demoninator
x/7=2/7
